Another evidence for new physics emanates from the measurement of the anomalous magnetic moment of the muon, \(a_{\mu }\equiv (g_{\mu }-2)/2\) . In 2021, the muon \((g-2)\)  experiment at Fermilab E989 announced a new measurement which confirms the enduring discrepancy of \(a_{\mu }\)  with its SM prediction [1]} . The measurement from the previous muon \((g-2)\)  experiment at BNL, E821, deviated from the SM value at the level of 3.7\(\sigma \)  [2]} whereas the E989 Run 1 data is 3.4\(\sigma \)  away from the SM expectation. The combined data gives \(a_{\mu }=a_{\mu }^{\rm exp} -a_{\mu }^{\rm SM} = (251 \pm 59) \times 10^{-11}\)  implying an inconsistency with the SM at 4.2\(\sigma \)  level.
